Resistance-adjustable stationary bicycle

ABSTRACT

Disclosed is a resistance-adjustable stationary bicycle. First, an adjustment motor is arranged and is connected to a magnetic damping washer though an adjustment steel rope, so that an electrical-control resistance adjustment system is established; and second, an adjustment knob is arranged, and the rotation angle and rotation direction of the adjustment knob can be read to adaptively drive the adjustment motor to wind or unwind the adjustment steel rope to adjust the distance between the magnetic damping washer and a flywheel, so as to realize resistance adjustment. The adjustment knob is easy and convenient to operate and high in adjustment precision, users can adjust the resistance in real time to a value meeting the current requirements when using the stationary bicycle, and the problem of inconvenient adjustment of the resistance of existing stationary bicycles is solved.

BACKGROUND OF THE INVENTION 1. Technical Field

The invention belongs to the technical field of fitness equipment, inparticular to a resistance-adjustable stationary bicycle capable ofrealizing electrical adjustment of the resistance.

2. Description of Related Art

Magnetic damping washers are usually adopted by stationary bicycles tocontrol the rotational resistance of the flywheel, that is to say, thefrictional resistance between the magnetic damping washers and theflywheel can be adjusted to adjust the treading resistance of the pedalsof the stationary bicycles.

In the prior art, the relative positions of the magnetic damping washerand the flywheel are generally manually adjusted to adjust theresistance of the stationary bicycles. However, the existing stationarybicycles have the following defects: (1) in order to meet therequirements for different resistances of operators in differentperformance statuses, the resistance should be rapidly and easilyadjusted in the fitness process; and (2) under the condition ofconstant-resistance fitness, the resistance between the magnetic dampingwasher and the flywheel will be decreased when the magnetic dampingwasher is worn, which in turn leads to a non-uniform resistance, and inthis case, the resistance should also be adjusted in time.

In view of these defects, Chinese Utility Model Patent Publication No.CN204017268U discloses a foldable stationary bicycle which is based onelectromagnetic resistance control and comprises a front support, a rearsupport, a cushion, a handlebar tube, a pedal wheel mechanism, and aninertia wheel mechanism, wherein the middle of the front support ispivoted to the middle of the rear support; the inertial wheel mechanismcomprises an inertia wheel and an electromagnet component, the inertiawheel is mounted at the bottom of the front support, and theelectromagnet component is also mounted at the bottom of the frontsupport and is matched with the inertia wheel so as to form a resistanceagainst the inertia wheel; and the pedal wheel mechanism is mounted onthe lower portion of the front support, is located above the inertiawheel mechanism, and is linked with the inertia wheel mechanism.

According to this technical solution, the resistance of the inertiawheel is accurately controlled through the electromagnet component;however, the electromagnet component is high in energy consumption andhas a structural stability poorer than that of the magnetic dampingwasher. Thus, there is an urgent need for a magnetic dampingwasher-based stationary bicycle with the resistance capable of beingconveniently and rapidly adjusted.

BRIEF SUMMARY OF THE INVENTION

The objective of the invention is to provide a resistance-adjustablestationary bicycle to solve the problem of inconvenient adjustment ofthe resistance of existing stationary bicycles.

The specific solution is as follows: a resistance-adjustable stationarybicycle comprises a frame, wherein a magnetic damping washer and aflywheel are arranged on the frame, a permanent magnet layer is arrangedon a peripheral wall of the flywheel, and the magnetic damping washer ismovably arranged close to the periphery of the flywheel; a controller,an adjustment motor and an adjustment knob are further arranged on theframe, the controller is electrically connected with the adjustmentmotor and the adjustment knob, and the adjustment motor is connected tothe magnetic damping washer through an adjustment steel rope; and thecontroller reads the amount of rotation of the adjustment knob tocontrol the adjustment motor to wind or unwind the adjustment steel ropeto control the distance between the magnetic damping washer and theflywheel, so as to realize resistance adjustment.

Furthermore, the magnetic damping washer has an end hinged to the frameand an end connected to the frame through an elastic piece, and theelastic piece is able to apply a force to make the magnetic dampingwasher swing towards the flywheel; and the adjustment steel rope isconnected to a free end of the magnetic damping washer through theframe.

Furthermore, the resistance-adjustable stationary bicycle furthercomprises a mounting plate fixed to the frame; the free end of themagnetic damping washer is arranged between the mounting plate and theflywheel; the elastic piece is a compression spring and has two endsrespectively abutting against the mounting plate and the magneticdamping washer; and a limiting rod is arranged on the mounting plate andpenetrates through the magnetic damping washer to be connected with alimiting block.

Furthermore, the resistance-adjustable stationary bicycle furthercomprises a handle part, and the adjustment knob is arranged on thehandle part; the frame comprises a bottom frame, a seat support, and ahandlebar support, and the seat support and the handlebar support arefixed to the bottom frame in a V shape; and the handle part is arrangedin the middle of the handlebar support in the vertical direction.

Furthermore, the resistance-adjustable stationary bicycle furthercomprises a brake pad and a steel brake cable; the handle part ispivoted to the handlebar support through a rotary shaft, the brake padis pivoted to a position, close to the flywheel, of the frame, and twoends of the steel brake cable are eccentrically connected to the handlepart and the brake pad respectively, so that the handle part and thebrake pad are linked together.

Furthermore, a crank is arranged at the lower end of the handle part,and one end of the steel brake cable is hooked on the crank.Furthermore, the brake pad has an end pivoted to the frame and an endprovided with a tension spring so as to be elastically connected to theframe through the tension spring; and the steel brake cable is connectedto the brake pad to apply a force to the brake pad which in turnovercomes the resistance from the tension spring to rotate.

The resistance-adjustable stationary bicycle of the invention has thefollowing beneficial effects: first, the adjustment motor is arrangedand is connected to the magnetic damping washer though the adjustmentsteel rope, so that an electrical-control resistance adjustment systemis established; and second, the adjustment knob is arranged, and therotation angle and rotation direction of the adjustment knob can be readto adaptively drive the adjustment motor to wind or unwind theadjustment steel rope to adjust the distance between the magneticdamping washer and the flywheel, so as to realize resistance adjustment.The adjustment knob is easy and convenient to operate and high inadjustment precision, users can adjust the resistance in real time to avalue meeting the current requirements when treading on the stationarybicycle, and the problem of inconvenient adjustment of the resistance ofexisting stationary bicycles is solved.

BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS

FIG. 1 is an exploded view of two side covers in one embodiment of theinvention;

FIG. 2 is a further exploded view of FIG. 1;

FIG. 3 is a structural view of FIG. 2 with part of the componentsremoved;

FIG. 4 is an enlarged view of part A in FIG. 3;

FIG. 5 is an enlarged view of part B in FIG. 3.

DETAILED DESCRIPTION OF THE INVENTION

The accompanying drawings are provided for a further description of theembodiments of the invention. These drawings belong to part of thecontents disclosed by the invention and are mainly used for illustratingthe embodiments and for explaining the operating principle of theembodiments in cooperation with the relevant description in thespecification. By referring to these contents, those ordinarily skilledin the field can appreciate other possible embodiments and advantages ofthe invention. The components in the figures are not drawn to scale, andsimilar reference signs generally represent similar components.

The invention is further expounded below with reference to theaccompanying drawings and embodiments.

As shown in FIG. 1 and FIG. 2, this embodiment provides aresistance-adjustable stationary bicycle which comprises a frame 10,wherein a magnetic damping washer 4 and a flywheel 11 are arranged onthe frame 10, a permanent magnet layer is arranged on a peripheral wallof the flywheel 11, one side of the magnetic damping washer 4 isprovided with a permanent magnet block to serve as a brake side, and themagnetic damping washer 4 is movably arranged close to the periphery ofthe flywheel 11.

Particularly, one end of the magnetic damping washer 4 is hinged to theframe 10 through a rotary shaft, the other end of the magnetic dampingwasher 4 is elastically connected to the frame 10 through an elasticpiece, and the elastic piece is able to apply a force to make themagnetic damping washer 4 swing towards the flywheel 11. Preferably, amounting plate is further arranged on the frame 10 and is fixed to aside, away from the flywheel 11, of the magnetic damping washer 4 on theframe 10, that is to say, the free end of the magnetic damping washer 4is arranged between the mounting plate and the flywheel 11. Moreover,the elastic piece is preferably a compression spring having two endsrespectively abutting against the mounting plate and the free end of themagnetic damping washer 4 so as to apply a force towards the flywheel 11to the free end of the magnetic damping washer 4. Meanwhile, in order toprevent excessive swing of the magnetic damping washer 4, a limiting rodis arranged on the mounting plate, and the top of the limiting rodpenetrates through the magnetic damping washer 4 to be connected with alimiting block, so that the magnetic damping washer 4 is limited.

To fulfill easy adjustment and control of damping, a controller 1, anadjustment motor 3, and an adjustment knob are further arranged on theframe 10. In this embodiment, the adjustment knob is arranged on ahandle part 2; the controller 1 is electrically connected with theadjustment motor 3 and the adjustment knob, and then the adjustmentmotor 3 is connected to the free end of the magnetic damping washer 4through an adjustment steel rope 34 particularly in such a manner: theadjustment steel rope 34 penetrates through the mounting base and isthen hooked on the free end of the magnetic damping washer 4.

In this embodiment, damping adjustment is realized in the following way:the controller 1 reads the rotation variables of the adjustment knob onthe handle part 2, namely the rotation direction and the rotation angle,to control the adjustment motor 3 to wind or unwind the adjustment steelrope 34, so as to control the swing angle of the magnetic damping washer4 (to adjust the distance between the magnetic damping washer 4 and theflywheel 11), so that resistance adjustment is realized.

In this embodiment, the frame 10 comprises a bottom frame horizontallyplaced on the ground, a seat support provided with a seat, and ahandlebar support provided with a handlebar part, wherein the seatsupport and the handlebar support are fixed to the bottom frame in a Vshape, and the handle part 2 is arranged in the middle of the handlebarsupport in a vertical direction and exactly faces a position verticallybelow the arms to fulfill the optimum ergonomic effect, so that theadjustment knob of the handle part 2 can be adjusted most conveniently.

Furthermore, the controller 1 is connected with a communication module.Preferably, the communication module is a Bluetooth communication modulethrough which the controller 1 is connected to a handheld electronicterminal device such as a mobile phone or a tablet computer, so that anoperator can input parameter values to the controller via an APP on theexternal handheld electronic terminal device to control the adjustmentmotor 3 to work and thus realize resistance adjustment.

Referring to FIGS. 3-5, the resistance-adjustable stationary bicycle inthis embodiment further comprises an emergency braking system. Theemergency braking system comprises a brake pad 5 and a steel brake cable6. The handle part 2 is pivoted to the handlebar support through arotary shaft, the brake pad 5 is pivoted to a position, close to theflywheel 11, of the frame 10, and two ends of the steel brake cable 6are eccentrically connected to the handle part 2 and the brake pad 5respectively, so that the handle part 2 and the brake pad 5 are linkedtogether.

Particularly, a crank is arranged at the lower end of the handle part 2,and one end of the steel brake cable 6 is hooked on the crank; the otherend of the brake pad 5 is pivoted to the frame 10 and is provided with atension spring 51 so as to be elastically connected to the frame 10through the tension spring 51 or to move away from the flywheel 11 underthe elastic effect; the steel brake cable 6 is connected to the brakepad 5; and when the handle part 2 is swung around the axis from top tobottom, the steel brake cable 6 is tensioned to apply a force to thebrake pad 5 which in turn overcomes the resistance from the tensionspring 51 to rotate to abut against the periphery of the flywheel 11, sothat emergency braking is realized.

Although the invention is specifically illustrated and introduced incombination with preferred embodiments, those skilled in the art wouldappreciate that variations of the invention can be made in forms and indetails without deviating from the spirit and scope defined by theclaims, and all these variations should also fall within the protectionscope of the invention.

What is claimed is:
 1. A resistance-adjustable stationary bicycle,comprising a frame, wherein a magnetic damping washer and a flywheel arearranged on the frame, a permanent magnet layer is arranged on aperipheral wall of the flywheel, and the magnetic damping washer ismovably arranged close to a periphery of the flywheel; a controller, anadjustment motor, and an adjustment knob are further arranged on theframe, the controller is electrically connected with the adjustmentmotor and the adjustment knob, and the adjustment motor is connected tothe magnetic damping washer through an adjustment steel rope; thecontroller reads the amount of rotation of the adjustment knob tocontrol the adjustment motor to wind or unwind the adjustment steel ropeto control a distance between the magnetic damping washer and theflywheel, so as to realize resistance adjustment.
 2. Theresistance-adjustable stationary bicycle according to claim 1, whereinthe magnetic damping washer has an end hinged to the frame and an endelastically connected to the frame through an elastic piece, and theelastic piece is able to apply a force to make the magnetic dampingwasher swing towards the flywheel; and the adjustment steel rope isconnected to a free end of the magnetic damping washer through theframe.
 3. The resistance-adjustable stationary bicycle according toclaim 2, wherein the resistance-adjustable stationary bicycle furthercomprises a mounting plate fixed to the frame, and the free end of themagnetic damping washer is arranged between the mounting plate and theflywheel; the elastic piece is a compression spring having two endsrespectively abutting against the mounting plate and the magneticdamping washer; and a limiting rod is arranged on the mounting plate andpenetrates through the magnetic damping washer to be connected with alimiting block.
 4. The resistance-adjustable stationary bicycleaccording to claim 1, wherein the controller is further connected with acommunication module to be connected to a handheld electronic terminaldevice, so that the controller can control the adjustment motor throughthe external handheld electronic terminal device.
 5. Theresistance-adjustable stationary bicycle according to claim 1, whereinthe resistance-adjustable stationary bicycle further comprises a handlepart, and the adjustment knob is arranged on the handle part; the framecomprises a bottom frame, a seat support and a handlebar support, andthe seat support and the handlebar support are fixed to the bottom framein a V shape; and the handle part is arranged in a middle of thehandlebar support in a vertical direction.
 6. The resistance-adjustablestationary bicycle according to claim 5, wherein theresistance-adjustable stationary bicycle further comprises a brake padand a steel brake cable; the handle part is pivoted to the handlebarsupport through a rotary shaft, and the brake pad is pivoted to aposition, close to the flywheel, of the frame; and two ends of the steelbrake cable are eccentrically connected to the handle part and the brakepad respectively, so that the handle part and the brake pad are linkedtogether.
 7. The resistance-adjustable stationary bicycle according toclaim 6, wherein a crank is arranged at a lower end of the handle part,and one end of the steel brake cable is hooked on the crank.
 8. Theresistance-adjustable stationary bicycle according to claim 6, whereinthe brake pad has an end pivoted to the frame and an end provided with atension spring so as to be elastically connected to the frame throughthe tension spring; and the steel brake cable is connected to the brakepad to apply a force to the brake pad which in turn overcomes aresistance from the tension spring to rotate.
 9. Theresistance-adjustable stationary bicycle according to claim 2, whereinthe resistance-adjustable stationary bicycle further comprises a handlepart, and the adjustment knob is arranged on the handle part; the framecomprises a bottom frame, a seat support, and a handlebar support, andthe seat support and the handlebar support are fixed to the bottom framein a V shape; and the handle part is arranged in a middle of thehandlebar support in a vertical direction.
 10. The resistance-adjustablestationary bicycle according to claim 9, wherein theresistance-adjustable stationary bicycle further comprises a brake padand a steel brake cable; the handle part is pivoted to the handlebarsupport through a rotary shaft, and the brake pad is pivoted to aposition, close to the flywheel, of the frame; and two ends of the steelbrake cable are eccentrically connected to the handle part and the brakepad respectively, so that the handle part and the brake pad are linkedtogether.
 11. The resistance-adjustable stationary bicycle according toclaim 10, wherein a crank is arranged at a lower end of the handle part,and one end of the steel brake cable is hooked on the crank.
 12. Theresistance-adjustable stationary bicycle according to claim 10, whereinthe brake pad has an end pivoted to the frame and an end provided with atension spring so as to be elastically connected to the frame throughthe tension spring; and the steel brake cable is connected to the brakepad to apply a force to the brake pad which in turn overcomes aresistance from the tension spring to rotate.
 13. Theresistance-adjustable stationary bicycle according to claim 3, whereinthe resistance-adjustable stationary bicycle further comprises a handlepart, and the adjustment knob is arranged on the handle part; the framecomprises a bottom frame, a seat support, and a handlebar support, andthe seat support and the handlebar support are fixed to the bottom framein a V shape; and the handle part is arranged in a middle of thehandlebar support in a vertical direction.
 14. The resistance-adjustablestationary bicycle according to claim 13, wherein theresistance-adjustable stationary bicycle further comprises a brake padand a steel brake cable; the handle part is pivoted to the handlebarsupport through a rotary shaft, and the brake pad is pivoted to aposition, close to the flywheel, of the frame; and two ends of the steelbrake cable are eccentrically connected to the handle part and the brakepad respectively, so that the handle part and the brake pad are linkedtogether.
 15. The resistance-adjustable stationary bicycle according toclaim 14, wherein a crank is arranged at a lower end of the handle part,and one end of the steel brake cable is hooked on the crank.
 16. Theresistance-adjustable stationary bicycle according to claim 14, whereinthe brake pad has an end pivoted to the frame and an end provided with atension spring so as to be elastically connected to the frame throughthe tension spring; and the steel brake cable is connected to the brakepad to apply a force to the brake pad which in turn overcomes aresistance from the tension spring to rotate.
 17. Theresistance-adjustable stationary bicycle according to claim 4, whereinthe resistance-adjustable stationary bicycle further comprises a handlepart, and the adjustment knob is arranged on the handle part; the framecomprises a bottom frame, a seat support and a handlebar support, andthe seat support and the handlebar support are fixed to the bottom framein a V shape; and the handle part is arranged in a middle of thehandlebar support in a vertical direction.
 18. The resistance-adjustablestationary bicycle according to claim 17, wherein theresistance-adjustable stationary bicycle further comprises a brake padand a steel brake cable; and the handle part is pivoted to the handlebarsupport through a rotary shaft, and the brake pad is pivoted to aposition, close to the flywheel, of the frame; and two ends of the steelbrake cable are eccentrically connected to the handle part and the brakepad respectively, so that the handle part and the brake pad are linkedtogether.
 19. The resistance-adjustable stationary bicycle according toclaim 18, wherein a crank is arranged at a lower end of the handle part,and one end of the steel brake cable is hooked on the crank.
 20. Theresistance-adjustable stationary bicycle according to claim 18, whereinthe brake pad has an end pivoted to the frame and an end provided with atension spring so as to be elastically connected to the frame throughthe tension spring; and the steel brake cable is connected to the brakepad to apply a force to the brake pad which in turn overcomes aresistance from the tension spring to rotate.